Is there a straightforward list of MX5’s with 6 speed gearbox, Torsen LSD and Bilstein shocks, or is it only the RS?
10AE and 2000 Icon.
Have a look at this list
MK2.5 SVT sport is the most common source of a six speed box. Early ones, up to 2002/3 were also fitted with Torsen diff(type 2 I think) so different ratio to torsen fitted to earlier cars. Replaced with Fuji diff sometime in 2003.
SVT should have Bilstein shocks too.